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Щоденний бюлетень про сонячну та геомагнітну активність від SIDC

Випущено: 2026 Feb 28 1231 UTC

Прогноз SIDC

Сонячні спалахи

C-class flares expected, (probability >=50%)

Геомагнетизм

Minor storm expected (A>=30 or K=5)

Сонячні протони

Quiet

	10 см потік	Ap
28 Feb 2026	140	018
01 Mar 2026	144	018
02 Mar 2026	148	010

Сонячно-активні області та спалахи

Solar flaring activity was low over the past 24 hours, with only C-class flares. The strongest flare was a C6.4 flare (SIDC Flare 7095), peaking at 03:13 UTC on February 28, which was associated with SIDC Sunspot Group 803 (NOAA Active Region 4380). There are currently four numbered active regions on the solar disk. SIDC Sunspot Groups 801, 803, 804 (NOAA Active Regions 4378, 4380, 4381) are the most complex ones, with magnetic type beta. SIDC Sunspot Group 804 (NOAA Active Region 4381) has rotated on disc from the east limb, in the northeast quadrant. The solar flaring activity is expected to be low over the next 24 hours, with C-class flares very likely and a small chance for M-class flares.

Корональні викиди маси

No Earth-directed Coronal Mass Ejections (CMEs) were observed in the available coronagraph imagery in the last 24 hours.

Сонячний вітер

Over the past 24 hours, the solar wind parameters (ACE and DSCOVR) reflected mostly slow solar wind conditions. Speed values ranged between 490 km/s and 380 km/s. The interplanetary magnetic field values were between 3 nT and 5 nT. The Bz component varied between -4 nT and 3 nT. The interplanetary magnetic field angle was mostly in the negative sector. Enhanced solar wind conditions may be possible over the next 24 hours, due to the possible arrival of a glancing blow associated with the Coronal Mass Ejection (SIDC CME 607) observed at 07:00 UTC on February 25.

Геомагнетизм

Geomagnetic conditions globally and locally were mostly at quiet to unsettled levels (NOAA Kp 2 to 3+, K BEL 1 to 3). Active to minor storm conditions may be possible over the next 24 hours, due to the possible arrival of a glancing blow associated with the Coronal Mass Ejection (SIDC CME 607) observed at 07:00 UTC on February 25.

Рівні потоку протонів

The greater than 10 MeV proton flux was below the 10 pfu threshold level over the past 24 hours. It is expected to remain below the threshold level over the next 24 hours.

Потоки електронів на геостаціонарній орбіті

The greater than 2 MeV electron flux measured by GOES 18 was mostly above the 1000 pfu threshold in the last 24 hours. The greater than 2 MeV electron flux measured by GOES 19 was above the 1000 pfu threshold until around 04:00 UTC on February 28 and has remained below the threshold since. The greater than 2 MeV electron flux is expected to remain around the 1000 pfu threshold levels in the next 24 hours. The 24-hour electron fluence is presently at moderate levels and is expected to remain so over the next 24 hours.

Розрахунок міжнародної кількості сонячних плям станом на сьогодні (ISN): 055, за даними 05 станцій.

Сонячні індекси за 27 Feb 2026

Число Вольфа, Катанія	044
Сонячний потік 10 см	139
AK Chambon La Forêt	015
AK Wingst	010
Розрахунковий індекс Ap	010
Розрахункова міжнародна кількість сонячних плям	042 - За даними 25 станцій

Зведення помітних подій

Надано Центром Аналізу Даних Сонячного Впливу (SIDC)© - SIDC - Оброблено SpaceWeatherLive

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